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Backend Tech Lead

Dominik Marciniszyn

I think I could split my own private world in two parts — sports and technology. I’m practicing martial arts and doing kettlebell trainings. Plus, I love motorsports (F1, FE). When it comes to the other part, I’m following technology news, learning a lot about A.I. and machine learning, and programming — both as a hobby and professionally. Thanks to Codetain I can develop my skills and interests among wonderful talented and passionate people! The diversity of our personalities and professional experience makes our meetings extra exciting and we always come up with unexpected but effective solutions for various problems!


My profile

Technology stack


Fast API / Django / NodeJS / Python / TypeScript / C# / Serverless Framework


PostgreSQL / Oracle / Sequelize


peewee / Hibernate / Design Patterns / SOLID / Docker / Unity / GraphQL / TensorFlow / RabbitMQ / numpy / pandas

My profile

Open-source contributions

My activity

Github contributions


My activity

Blog posts

Lambda in TypeScript with Serverless Framework

Hello everyone. Today I'd like to show you how to create your own lambda function in typescript. To achieve this I’ll use the serverless framework and AWS cloud. But first, let’s start with some...

Introduction to FastAPI — a great modern web framework

Hi folks! It has been some time since I last wrote an article. I had lots of work, but now I’m back! Today I would like to present you my favourite web framework in Python - FastAPI. This framework...

A brief history of machine learning

Hello there! Today I would like to tell you about the history of machine learning.

End-to-end from the first step for as long as you need

As a reliable software company we’re focused on delivering the best quality IT services. However, we’ve discovered that programming skills give us a very particular opportunity...

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